zcash_spec is used at run time in 23 crates (of which 1 optionally). It is a direct run-time dependency in 5 crates.

Depender (with downloads and own rev deps) zcash_spec version
14K 9 orchard ^0.1
12K 15 zcash_primitives ^0.1
9.9K 8 zip32 ^0.1.2
7.6K 10 sapling-crypto ^0.1
3 zcash_transparent ^0.1